UNIX for Advanced & Expert Users

Hey All,

I have bought some paper from the net... let's say in PDF format. They are some questions from that paper that says Explanation: pending. Send your suggestion tofeedback*****king.com ... anyway. Here are the questions. I have made my choice but would like to know your opinion.

1. The Minimum number of NFS file system on an HP-UX 10.20 system & above is:

A. one -/stand
B. two -/and /stand
C. zero
D. Three -/,/stand & /etc

The correct answer is: A. one -/stand

2. Which information is not displayed when the pvdisplay command is used without any command-line options?

A. Name of the volume group to which the physical volume is related.
B. Total number of physical extents.
C. Name of the filesystem created on the disk.
D. Allocated physical extents.

The correct answer is: C. Name of the filesystem created on the disk.

3. The group id defined in the /etc/passwd file is used for controlling access to:

A. Directories only
B. Files only
C. User information
D. Files and directories

The correct answer is: B. Files only

4. The lpadmin command can be used to configure a new printer when:

A. All queries are empty.
B. The scheduler is not running.
C. All Printers are online.
D. Only in single user mode.

The correct answer is: C. All Printers are online.


5. What is the difference between kill pid and kill -9 pid, where pid represents the process identification number?

A. kill pid allows outstanding I/O to complete, the kill -9 terminate the job immediately, aborting any outstanding I/O.
B. kill pid produces a core dump, the kill -9 terminates the job now aborting any outstanding I/O.
C. There is no difference.
D. The kill pid ask you to confirm the kill, the kill -9 terminates the job now.

The correct answer is: B. kill pid produces a core dump, the kill -9 terminates the job now aborting any outstanding I/O.
The kill pid command send a SIGTERM telling the process to exit. The process can act how ever it wants. If not explicitly handled the process will not core dump but just exit. kill -9 send a SIGKILL to the process this causes the process to immediately exit. This action cannot be ignored or modified. In either I/O buffered outside of the process is flushed.

6. What is PAM (Pluggable Authentication Module) used for?

A. To encrypt and authenticate IP packets at the network layer.
B. To indicate which service can run in a non secure mode.
C. To tell each service which authentication module to use.
D. To enable the ftp service with encryption.

The correct answer is: C. To tell each service which authentication module to use.

7. Which list includes only VXVM objects?

A. diskdg,voldg, plex, cat_vol
B. lvol, plex, subdisk, volumes
C. vmdisk, subdisk, plex,volume
D. mirror_disk, subdisk,rootdg

The correct answer is: A. diskdg,voldg, plex, cat_vol
8. Comparing device block I/O and character I/O, which statements are true? Select three.

A. Block I/O passes through the buffer cache.
B. Character I/O is also known as raw I/O.
C. Character I/O passes through the buffer cache.
D. Serial devices always use character I/O.
E. Parallel ports always use block I/O.
F. All devices have both character and block drives.

The correct answer is: A. Block I/O passes through the buffer cache., B. Character I/O is also known as raw I/O, D. Serial devices always use character I/O.

9. Which command shows all physical volume in a volume group?

A. vgdisplay
B. pvdisplay
C. lvdisplay
D. lvmdisplay

The correct answer is: D. lvmdisplay

10. What is typically done in a Shec file?

A. Set aliases, functions, and prompts for the shell environment.
B. Show the message of the day file and news.
C. Set up of the date and time zone.
D. Configuration of the CDE profile.

The correct answer is: A. Set aliases, functions, and prompts for the shell environment.

11. Which of the following device file names point to the disk drive defined by the following ioscan -f output files?

Class l H/W PATH
______________________________
ext-bus 4 8/16/5
disk 9 8/16/5.6.0

A. /dev/rdsk/c5t4d9
B. /dev/rdsk/c4t6d0
C. /dev/rdsk/c5t5d0
D. /dev/rdsk/c6t9d4

The correct answer is: B. /dev/rdsk/c4t6d0

12. NetMon is configured with a five minute polling period. How many nodes can be monitored effectively given this setting?

A. Unlimited
B. 4000-16000
C. 2000-4000
D. 500-1000
E. 1000-2000

The correct answer is: E. 1000-2000
Approximately 1000-2000 nodes can be monitored via NetMon with a five minute polling period configured. This may of course vary depending upon network and system performance and configuration.

1 NFS is not required to be used. zero.

3 files and directories (on unix, a directory really is a file)

4 you need to shut down the scheduler (lpsched) to use lpadmin to configure anything

5 answer A is much less incorrect than the others, but I'm not fond of the wording of it. There is more at state than i/o. And in some cases, no i/o is at stake.

9 vgdisplay

10 I have never heard of a "shec file" before.